Chemistry, 23.07.2019 05:30 1234567890lknn
Alab technician had a sample of radioactive americium. he knew it was one of the isotopes listed in the table below but did not know which one. the sample originally contained 0.008 g of the isotope, but 120 minutes later it contained 0.002 g. a. how many half-lives have passed? b. what is the half-life of the sample? c. which isotope did he have?
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Chemistry, 22.06.2019 10:50
8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm
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Chemistry, 22.06.2019 15:00
What is the most important factor in determining climates.
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Chemistry, 23.06.2019 02:00
When an experimenter draws a conclusion that he assumes will apply to all situations set up similarly to his test situation, even though he cannot possibly have examined all possible test scenarios, the experimenter is using deductive reasoning inductive reasoning abductive reasoning subjective reasoning
Answers: 1
Alab technician had a sample of radioactive americium. he knew it was one of the isotopes listed in...
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